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What is Water Hammer?
What is Water Hammer?
What is Water Hammer?

What is Water Hammer? - Practical Engineering

Practical Engineering
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Grady Hillhouse is a professional civil engineer and hobbyist everything else in San Antonio, Texas. Randall Munroe said, "You can look at practically any part of anything manmade around you and think, Some engineer was frustrated while designing this. It's a little human connection." My goal for Practical Engineering is to increase exposure and interest in the field of engineering. I'm trying to highlight that connection between the world around us and the energy, passion, and thought that goes into making it a nicer place to live. Disclaimer: The videos I produce are for entertainment only. My videos or comments should not be regarded as professional engineering advice or services. Also, these videos are produced on my own behalf and do not necessarily represent the views or opinions of my employer, Freese and Nichols, Inc. Finally, please do not attempt to reproduce anything you see me do without the proper knowledge, experience, and equipment.

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First 100 people to sign up will get $30 off their first Blue Apron order here: This video is sponsored by Blue Apron.
Hydraulic transients (also known as water hammer) can seem innocuous in a residential setting, but these spikes in pressure can cause major damage to large pipelines and industrial pipe networks. In this video, we briefly discuss how water hammer occurs and how engineers mitigate the effect.


Marxist Arrow by Twin Musicom is licensed under a Creative Commons Attribution License

Tonic and Energy by Elexive is licensed under a Creative Commons Attribution License
Was Roman Concrete Better?

Comparing modern concrete to that of the western Roman empire. Support Practical Engineering by visiting and sign up for free. More Videos About Concrete: - What is Concrete? ( - Why Concrete Needs Reinforcement ( -Does Rebar Rust? ( In this video, I discuss a few modern techniques that help improve design life of concrete, including roller compacted concrete (RCC) and water reducing admixtures (superplasticizers). There are a whole host of differences between modern concrete and that of the western Roman empire that I didn’t have time to go into, including freeze/thaw damage. This is such and interesting topic, so here are some references...

How Soil Destroys Buildings

Okay this is the last video on the hazards of soil mechanics for a while :) Support for this video comes from Brilliant: Expansive soils cause more property damage per year than earthquakes, floods, hurricanes, and tornadoes combined. Expansive soils are a slow-moving geologic phenomenon, which makes them not very news-worthy. However, they still cause a tremendous amount of damage to buildings and the public infrastructure we rely on every day. USGS Map of Expansive Soils: -Patreon: -Website: Marxist Arrow by Twin Musicom is licensed under a Creative Commons Attribution License Source: Tonic and Energy by Elexive is licensed under a Creative...

Understanding Helicopter's Engine | Turboshaft

A turboshaft engine acts as the powerhouse of modern helicopters. They are also used for power generation and marine propulsion! This video will illustrate the inner-workings of turboshaft engines in a clear and logical way. Your support makes us sustainable, please do visit us at Voice over artist :

The Ingenious Design of the Aluminum Beverage Can

Bill details the engineering choices underlying the design of a beverage can He explains why it is cylindrical, outlines the manufacturing steps needed to created the can, notes why the can narrows near it lid, show close ups of the double-seam that hold the lid on, and details the complex operation of the tab that opens the can. ☛ Links to additional videos: Rexam: How It’s Made: Anim1: Anim2: Drawing: Redrawing:

World's Heaviest Weight

How do you measure big forces accurately? By calibrating your force transducer on the world's biggest weight - 1,000,000 pounds of force. This machine ensures planes don't break apart, jets provide required thrust, and rockets make it to their destination. Thanks to the people at NIST for showing me around: Rick Seifarth and Ben Stein. Animations here are by Sean Kelley and additional footage by Jennifer Lauren Lee. Special thanks to Patreon Supporters: Tony Fadell, Donal Botkin, Jeff Straathof, Zach Mueller, Ron Neal, Nathan Hansen Support Veritasium on Patreon: Before visiting NIST in Washington DC I had no idea machines like this existed. Surely...

How to make a Concrete Counter Top in 1 hour!

How to make a concrete counter top using Rapid Set Mortar Mix. In this video I will show you the quickest and easiest way to make a concrete counter top using Rapid Set Mortar Mix, Flow Control and Flexible Construction Adhesive with an inverted or upside down melamine mold. So incredibly sorry about volume of music! Still learning the ins and outs of iMovies and I promise you it’ll get better in the next video. !!!!!!!Very Very Special Thanks to Jordon K. !!!!!!! Camera I used: iPhone 8 Video editing software: iMovie Concrete products I used: -55 lb. Mortar Mix Rapid Set Mortar Mix data...

Spinning Levers (1936) - How A Transmission Works

The transmission in the modern motorcar -- the mechanism that makes it possible to have three forward speeds and a reverse -- is a series of levers, levers that spin. Producer: Handy (Jam) Organization Sponsor: Chevrolet Division, General Motors Corporation

What is Steam Hammer?

A few things that can go very wrong when you put steam in a pipe... The first 300 people to click will get their first 2 months of Skillshare for free: Last month we talked about the damaging effects of water hammer, but there’s another state of H2O equally if not more dangerous when put in pipes. Today on Practical Engineering we’re talking about steam hammer and differential shock. Nick Moore's Steam Hammer Video: NYC Steam Explosion clip courtesy of Nick Parish ( -Patreon: -Website: This video was sponsored by Skillshare. Marxist Arrow by Twin Musicom is licensed under a Creative Commons Attribution...

Why Laminar Flow is AWESOME - Smarter Every Day 208

Click here if Laminar flow is awesome: Get a total of $80 off (8 free HelloFresh meals in first month) go to and enter "smarter80" ⇊ Click below for more links! ⇊ Tweet me Laminar flow pics: If you've ever seen flowing water look frozen like glass... that's Laminar flow ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ GET SMARTER SECTION Personally, I find calculating Reynolds number to be quite difficult. It's done differently depending on what type of flow you have. A pipe is calculated different than an airplane wing etc. Some fluid dynamicists would tell you that it's an exact science. I personally feel that it's a...

How Quicksand Causes Dam Failures

First 100 people to sign up will get three meals off their Blue Apron order free! Click here: In civil engineering, quicksand is more than just a puddle of mud! The "quick condition" occurs when seepage reduces the effective stress of a soil. This can lead to some dangerous conditions, especially if the seepage causes piping erosion to occur at a dam. Thanks for watching! -Patreon: -Website: Marxist Arrow by Twin Musicom is licensed under a Creative Commons Attribution License Source: Tonic and Energy by Elexive is licensed under a Creative Commons Attribution License

Awesome Mega Machines Technology !!! Wonderful Engineering Equipment Excavator #HD720p

Awesome Mega Machines Technology !!! Wonderful Engineering Equipment Excavator #HD720p ☑️Blogspot ➡➡ ☑️Playlist ➡➡ ☑️Please Subscribe see more videos ➡➡ ☑️Thank you! ☑️Credits: ---------------------------------------------------- Colorado Springs Utilities ceattachments ------------------------------------------------------------------------------

Torque Converter, How does it work ?

Most of us enjoy the smooth and effortless feeling of driving in an automatic transmission car. The driving is effortless because you don’t need to worry about gear changing and you don’t have a clutch pedal to operate. In an automatic transmission car the work, of the clutch pedal, is automatically done by a hidden component, which is truly an engineering marvel, the torque converter. The torque converter can even multiply the torque. Let’s see how this purely mechanical device performs its tasks. Voice over artist : Please support us at Patreon :

Welding 101 for Hobbyists (and Nerds)

I got a new toy in the shop and thought I'd take the chance to try it out on video. Expect more metal fabrication in future videos! Free Trial at The Great Courses Plus: This Old Tony: Welding Tips and Tricks: In general, and compared to other common building materials, metals have excellent mechanical properties. They are hard, tough, strong, and durable. As someone who occasionally works the wood, even I can admit that metals are a superior material in many regards. So you can see why it would be advantageous to have a way to connect them together, especially if...

Stop Water Pipes From Banging: Installing Washing Machine Water Hammer Arrestors

How to install a washing machine water hammer arrestor. Stop water distribution lines from rattling, shaking, or banging. Oatey quiet pipes washing machine supply line shock absorber. Sioux Chief Mini-Rester 3/4 in. x 3/4 in. FHT x MHT washing machine arrester. ⬇️Trusted Products⬇️ Washing Machine Water Hammer Arrestors Stainless Steel Washing Machine Hoses Here's a list of some of the most common causes of water hammer and noises similar to water hammer. 1. Fast acting valves such as solenoid valves. Seen in dishwashers, washing machines, and fridges. 2. Excessive water pressure. Over 80 PSI 3. Backflow preventer or check valve installed on the water distribution line, causing an open...

What is Concrete?

What's the difference between concrete and cement? Support for this video comes from Brilliant: Concrete is the most important construction material on earth and foundation of our modern society. At first glance it seems rudimentary, but there is a tremendous amount of complexity involved in every part of designing and placing concrete. This video is meant to be a bare-bones introduction to the topic, with a cool demonstration of concrete strength using a hydraulic press. -Patreon: -Website: Marxist Arrow by Twin Musicom is licensed under a Creative Commons Attribution License Source: Tonic and Energy by Elexive is licensed under a Creative Commons...

How Water Towers Work

Purpose and function of elevated water storage tanks. Get some Bombas socks for 20% off! Code: PRACTICAL The job of finding enough water, making it safe to use, and then reliably distributing it to the system customers with almost no downtime is a monumental task that requires a lot of infrastructure. And, probably the most visible component of a public water system is the elevated storage tank, also known as a water tower. I’m Grady Hillhouse and this is Public Works, my video series on infrastructure and the humanmade world around us. -Patreon: -Website: Writing/Editing/Production: Grady Hillhouse Animation: Stephanie White, Connor Claver, Dayan...

What is Cavitation? (with AvE)

The basics of fluid cavitation, including demonstration from AvE. First 100 people get $50 off their first two weeks of Blue Apron, here: Sponsored by Blue Apron If you subject a fluid to a sudden change in pressure, some interesting things can happen. You can cause tremendous damage to moving parts, or you can harness this destructive power in many beneficial ways. Thanks to AvE for supplying the demonstration for this video. If you like seeing the insides of tools and industrial machinery check out his channel: Related AvE videos: Part 1 Part 2 -Patreon: -Website: Tonic and Energy by Elexive is...

Horsepower vs Torque - A Simple Explanation

What's The Difference Between Horsepower & Torque? Why Is Peak Acceleration At Peak Power? Subscribe for new videos every Wednesday! - Awesome Car Products: Which is better, horsepower or torque? Two words that are often stated in the car community, but often misunderstood. This video seeks to clarify the difference between the two, without silly analogies like "horsepower is how fast you hit the wall, torque is how far you take it with you" (which, by the way, is highly inaccurate). Torque is a force acting at a radius, while horsepower simply incorporates time into the equation. This video will discuss...

How to Make Free Energy Water Pump - Ram Pump

How to make a hydraulic ram pump which requires no electricity and no motor. NOTE : This pump uses falling water to lift a lesser amount of water to a higher elevation than the source. So, being primarily used for lifting relatively small amount of water to a higher elevation. if you want to deliver 2 cubic meter of water to an elevated location, you need at least 6 cubic meters of water to operate the pump 4 cubic meters of which will be used to drive the pump and goes directly as waste.

World's Funniest Engineering Fails

Who approved these blue prints? These are 57 of the world's funniest & most EXTREME building & engineering fails ever! Subscribe to Talltanic 50. At the corner of Auschwitz lane and holocaust road. How did no one see this in the blueprints? 49. In the event of an emergency, grab a crowbar or a torch and weld the bars off from around this hydrant. Good luck, you’re going to need it. 48. Duck! These stairs are for the vertically challenged individuals only. 47. We can stay at the second Best Western just to see what the inside of the room. Staying in...

Why Concrete Needs Reinforcement

More destructive testing to answer your questions about concrete. The first 1000 people to click will get their first 2 months of Skillshare for free: Concrete's greatest weakness is its tensile strength, which can be less than 10% of its compressive strength. So, we often reinforce it to create a composite material strong against all types of stress. This video briefly touches on conventional rebar and prestressed/post-tensioned reinforcement. -Patreon: -Website: This video was sponsored by Skillshare. Marxist Arrow by Twin Musicom is licensed under a Creative Commons Attribution License Source: Tonic and Energy by Elexive is licensed under a Creative Commons Attribution License Source:

Sand Castle Holds Up A Car! - Mechanically Stabilized Earth

Dirt is probably the cheapest and simplest construction material out there, but it's not very strong compared to other choices. Luckily geotechnical engineers have developed a way to strengthen earthen materials with almost no additional effort - Mechanically Stabilized Earth (aka MSE or Reinforced Soil). If you look closely, you'll see MSE walls are everywhere. Thanks for watching, and let me know what you think! Join the National Marrow Donation Program: Website: Patreon: Music: Doctor Vox - Gold (

Why the Tacoma Narrows Bridge Collapsed

Wind can be one of the most critical and complicated loads on civil structures. Signup for your FREE trial to The Great Courses Plus here: The case of the Tacoma Narrows bridge is a well-known cautionary tale that’s discussed in engineering and physics classrooms across the world. Both resonance from vortex shedding and aeroelastic flutter contributed to the failure. When you push the envelope, you have to be vigilant because things that didn’t matter before start to become important (e.g. wind loads on lighter structures). Unanticipated challenges are a cost of innovation and that’s something that we can all keep in...

How to Quiet Pipes With a Water Hammer Arrestor - This Old House

Silencing noisy pipes with This Old House plumbing and heating expert Richard Trethewey. (See below for a shopping list and tools.) Click here to SUBSCRIBE to the official This Old House YouTube channel: Full episode: How to Quiet a Noisy PVC Plumbing Vent: How to Prevent Frozen Pipes: How to Stop Copper Pipe Corrosion: Shopping List for Quieting Pipes With a Water Hammer Arrestor: - water hammer arrestors - copper T-fittings - lead-free solder and flux - emery cloth - teflon tape - plastic pipe clip and 1 5/8-inch screw Tools for Quieting Pipes With a Water Hammer Arrestor: - screwdriver - tubing cutter - propane torch - adjustable wrench - drill/driver Follow...